This is not an FFL item. 80% AR-15 lower receiver starts as 7075-T6 forgings from the lead forge in the US and are fully machined to mil-spec tolerances. - These are anodized with a mil-spec type III hard coat anodizing. This is not a complete receiver and still requires machining to be done. - The operations left to be completed are as follows: fire control group trigger pin hammer pin trigger slot and the safety selector hole. Multi-caliber.